PSLE The ratio of the number of vests to that of shirts in a shop was 3 : 2 in the end. After 14 shirts were sold, the ratio of the number of vests to that of shirts became 7 : 4. What was the total number of vests and shirts in the shop in the end?
|
Vests |
Shirts |
Total |
Before |
3x7 = 21 u |
2x7 = 14 u |
35 u |
Change |
|
- 14 |
|
After |
7x3 = 21 u |
4x3 = 12 u |
33 u |
The number of vests remains unchanged. Make the number of vests the same.
LCM of 7 and 3 is 21.
Number of shirts sold
= 14 u - 12 u
= 2 u
1 u = 14 ÷ 2 = 7
Total number of vests and shirts in the end
= 21 u + 12 u
= 33 u
= 33 x 7
= 231
Answer(s): 231